What should the outer wrapping of a classified document contain?

The outer wrapping of a classified document must include the highest level of classification marking to ensure that anyone handling the document understands its sensitivity and the necessary precautions that must be taken to protect it. This classification marking acts as a warning label, indicating how the information should be handled, stored, and disseminated according to security protocols.

Including the highest level of classification on the outer wrapping helps enforce security measures by immediately alerting individuals to the potential risks associated with the information contained within. This is vital for maintaining national security and ensuring that sensitive information does not fall into unauthorized hands. Proper classification markings are part of a broader framework for information security that aims to protect classified materials from improper access and disclosure.

While personal return addresses, sender's names, and internal routing information may be important for logistical purposes in document handling, they do not convey the critical security context that the classification marking provides. Hence, the highest level of classification marking is essential for the overall protection of classified documents.